Check sibling questions
Download the questions here
The password to open the file is -   teachooisbest

How can we change feeble sound to loud sound?

Answer

Loudness of sound is directly proportional to its amplitude.

Feeble sound can be changed to loud sound by increasing its amplitude.

 

What is Supersonic Speed

Answer

When speed of an object is more than speed of sound,it is said to be travelling at supersonic speed

Example

Bullets, Jet Aircraft travel at supersonic speed

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo